Titlebook: Hydraulic Behaviour of Estuaries; D. M. McDowell,B. A. O’Connor Textbook 1977Latest edition Macmillan Publishers Limited 1977 behavior.est

領(lǐng)袖氣質(zhì)

Discussion of case histories,omplex interactions take place, which cannot be understood unless a global view of a system is obtained. Case histories, necessarily brief, are used to show how various strands have been brought together in the study of a few estuaries, each having a different character.

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A general description of estuarine behaviour,solation; the whole system has many inter-dependent parts, extending from the landward limit of the tidal rivers forming it to a point offshore beyond which the effect of an individual estuary on water circulation and sediment movement can no longer be discerned.

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禍害隱伏

The study of tidal systems: hydraulic models,recast adequately. Moreover, the number of finite sized elements is limited by the size of available computer. As a result, the possible accuracy of prediction is quite low. Although it is theoretically possible to reproduce behaviour of flow in three dimensions, the practical difficulties of doing so with sufficient accuracy are considerable.

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調(diào)色板

A general description of estuarine behaviour, is the return of water to the sea through rivers. Most rivers enter the sea where there is enough tidal rise and fall to modify flow near their mouths. The part of the river system in which the river widens under the influence of tidal action is the estuary, but the behaviour of the estuary is infl

GRIPE

Hydrodynamics of estuaries,ariations within the flow must be taken into account. The flow pattern in estuaries is unsteady, not only because of the tidal rise and fall at the mouth but also because there are large-scale eddies that vary in size and location. The complexity of the problem is such that a rigorous analysis of fl

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Sediment movements, preserve adequate navigation channels has often caused a city to decline in importance or even be abandoned altogether. For example, the city of Chester is situated at the head of the Dee Estuary in England and was a major port in Roman times, but is today hardly accessible to small pleasure craft

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The study of tidal systems: hydraulic models, an estuary as a connected system of elements, each of which has physical characteristics that are either averaged over its length or are lumped together at its interfaces with adjacent elements. Major changes of cross-section, reclamation or tidal capacity can be reproduced by changing the value of